You can be ACLS certified all you want. Most institutions will pay for your training.
But unless you actually do codes often, expect to forget everything you spent your time studying within about a few weeks. The training itself really isn't enough for me to expect someone to be good at it. You only get good at it by seeing it a lot, and as a psychiatry attending you won't....or at least you hopefully shouldn't. Any institution expecting their psychiatry attendings to run codes often, well that says something and it ain't good.